The tropics are still roiling even as the hurricane season nears an end.

The Earth is leaning toward winter but the tropics are fighting the tilt, conjuring Tropical Storm Sebastien on Tuesday to make the 2019 hurricane season one of only nine on record with 18-named systems.

Sebastien, which formed hundreds of miles northeast of the Leeward Islands and is no threat to the U.S., Puerto Rico or the Bahamas, is also notable for its late birth.

Colorado State University hurricane expert Phil Klotzbach said just 20 Atlantic basin storms have earned names after Nov. 17 in the satellite era.

RELATED: The calendar says hurricane season is almost over, what about Mother Nature?

Tropical Storm #Sebastien has formed in the central Atlantic – the 18th named storm of the 2019 Atlantic #hurricane season to date. 2019 is the 9th Atlantic season on record with 18+ named storms. Others are: 1887, 1933, 1969, 1995, 2005, 2010, 2011 and 2012.

— Philip Klotzbach (@philklotzbach) November 19, 2019

The most recent was 2016’s Hurricane Otto, which formed Nov. 21. Otto grew to a Category 3 hurricane before making landfall as a strong Cat 2 in southern Nicaragua on Oct. 24.

The last time a tropical cyclone earned a name that began with S was 2012’s Hurricane Sandy.

Hurricane season lasts through Nov. 30.

As of an afternoon update, Sebastien was 275 miles northeast of the Leeward Islands and traveling north-northwest at 12 mph. Its top sustained wind speeds were 45 mph with tropical storm-force winds that extended 105 miles from its center.

National Hurricane Center forecasters said Sebastien could strengthen slightly, but is expected to top out with 50-mph winds, turning post-tropical by the end of the week.

“The window for strengthening is likely to close as a cold front approaches from the west, overtakes Sebastien and causes it to weaken during the middle to latter part of this week,” said AccuWeather storm expert Dan Kottlowski.

Sebastien is on the western edge of a large area of high pressure in the Atlantic that will push it north and then northeast into the open ocean.

The next name on the 2019 storm list is Tanya.


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